Anchor-bolt



Hi0 Model.) L

w. s. 0mm.

, I AHGHO'R BOLT. No. 332,701- Patented Dec. 22', 1885.

I :H'iwb e s Ir maelmior UNITED STATES PATENT OFFICE.

WILLIAMS. CRAI or SPRINGFIELD, onto.

ANCHOR B OLT SPECIPI CAITlON forming part of Letters Eatent are. 333.70L-dated December 22.1885.

' Application-filed April i4, 1885.

said device being adapted totbe automatic-all y.

- tightened in its seat by the operation which secures the article to be held thereby.

The invention consists in an expandingrysleeve and a tapered or wedge shaped piece adapted to be forced into said sleeve by abolt or rod, which passes through said sleeve and secures the article to beheld by the device.

In the accompanying drawings, Figure 1 is 20. a perspective view, shown partly in section, of the device in place in the top of a stone st. gt the device in a vertical wall. Fig. 3 is a perspective -view showing the various parts 2 removed and in detail.

Like partsare indicated. by similar letters of reference throughout the several views. I

In the said drawings, A represents the sleeve, and B the tapered piece,adapted to be .drawn therein. The sleeve A is preferably provided with longitudinal openings a a a,

extending from the bottom thereof, thus fornr.

ing legs or strips 1) b, which are adapted to be expanded as the piece B is drawn into the sleeve. tapped outand adapted t3 receive the threaded end of a rod or bolt, 0. The upper end of the sleeve A is preferably provided with an opening adapted to receive the bolt 0, which passes through said opening, and to form a bearing 0 4 It will be seen that when the bolt 4 therefor.

is, screwed into the tapered piece B said piece neetions in which auchor-boltsare used, and

Fig. 2 is a longitudinal sectional View The tapered piece Bis preferably swarm). legato. (No model.)

brimstoue.

The device'may be of'any convenient size, and may be modified, as desired, to suit difierobviates the necessity of bushing with lead or ent uses to which it may be applied.

Instead of the bolt,a rod may be secured to the tapered piece and adapted to be drawn through the sleeve by means of I a key at the top; or other suitablelheans may be employed for forcing the tapered pieceinto the sleeve, and thus expandingsaid sleeve.

When the bolt is used and ada ted to screw into the tapered piece B, I ma 6 the piece hollowat the bottom and of considerable length, so that considerable space is left be- .twe'en the end of the bolt and the bottoin'of Y the hole intowhich the sleeve is placed I also picferablymotchthe sides of the of the said tapered piece, as shown, thus'eeono- -mizing the material and at the sainetime'by 7'0 this. construction rendering the tapered piece less liable to turn when the bolt is screwed therein. s 7

Itis obvious that the device may be modified in various ways without departing from the spirit of my invention, and it will be seen that it can be utilized invarious ways and for various purposes to which it may be applied. Having thus described my invention, I. clain1 1. The combination, with the cylindrical tapered piece, of the cylindrical sleeve having three or more longitudinal openings and a similar number of legs adaptedto beexpanded by said tapered piece, and means forfforcing saidtapcred piece into said s1eeve,.substantially as specified.

2. The combination, with the sleeve having the longitudinal openings therein, of the tapered piece htilliiwed out and notched at the go bottom thereof, and a bolt adapted to extendv through said sleeve and screw into said tapered piece, which is correspondingly tapped, substantially as specified. 4

In testimony whereof I have hereunto set 5 my hand this 6th day of April, A. D. 1885.

' WILLIAM S. CRAIGL Vihnc'sses:

G. F. IEncn,

PAUL A STALEY, 

